feat(rust-proxy-engine): add a Rust SIP proxy engine with shared SIP and codec libraries

rust/crates/opus-codec/Cargo.toml

@@ -8,10 +8,7 @@ name = "opus-codec"
 path = "src/main.rs"
 
 [dependencies]
-audiopus = "0.3.0-rc.0"
-ezk-g722 = "0.1"
-rubato = "0.14"
+codec-lib = { path = "../codec-lib" }
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
 base64 = "0.22"
-nnnoiseless = { version = "0.5", default-features = false }